CN219328900U - Visibility detection laser radar device - Google Patents
Visibility detection laser radar device Download PDFInfo
- Publication number
- CN219328900U CN219328900U CN202320067179.7U CN202320067179U CN219328900U CN 219328900 U CN219328900 U CN 219328900U CN 202320067179 U CN202320067179 U CN 202320067179U CN 219328900 U CN219328900 U CN 219328900U
- Authority
- CN
- China
- Prior art keywords
- module
- laser radar
- laser
- visibility
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The utility model discloses a visibility detection laser radar device, which comprises a laser emission module, a signal receiving module, a photoelectric detection module, a positioning module, a scanning module, an angle measurement module, a data processing and control module and a power supply module, wherein the data processing and control module is used for outputting a signal to control the laser emission module to emit laser and controlling the scanning module to perform space three-dimensional scanning; meanwhile, receiving the electric signals transmitted by the photoelectric detection module, receiving the longitude and latitude positioning signals transmitted by the positioning module, and receiving geomagnetic angle and inclination angle signals transmitted by the angle measurement module; the signals are processed by a data processing and control module to obtain spatial three-dimensional visibility distribution data; the power module is used for supplying power to the modules. The method and the device can acquire the distribution data of the visibility in the space dimension, and effectively monitor and identify the visibility change in different directions.
Description
Technical Field
The utility model relates to the technical field of laser radars, in particular to a visibility detection laser radar device.
Background
Visibility, i.e. the visible distance of the object, refers to the maximum distance that a person with normal vision can distinguish the outline of the object from the background light. The visibility is mainly influenced by the extinction coefficient of the aerosol particles because the visibility is dependent on the extinction coefficient of the aerosol particles and the atmospheric molecules are generally stable. The extinction coefficient of the aerosol particles is closely related to the atmospheric pollution condition, so the visibility can be used for representing the atmospheric pollution degree.
In recent years, with the rapid development of economy in China, the consumption of fossil energy such as coal, petroleum and the like is increased rapidly, and the weather phenomenon with low visibility is high. Visibility is classified into horizontal visibility, vertical visibility, and oblique visibility according to the relative positions of the observer and the target object. The horizontal visibility has a great influence on navigation and highway transportation, and the low visibility can cause the sealing of airports, wharfs and highways; the vertical visibility has a great influence on the take-off and landing of the helicopter, particularly the sea is influenced by a field, and a ship-borne fixed building, a sea fixed building and the like are used as take-off and landing platforms for taking off and landing of the helicopter with or without people; while fixed wing aircraft take off by taxiing on an inclined horizon, there is a great concern about inclined visibility.
Currently, visibility measurement mainly includes both transmission and forward scattering, both of which are "point-in-plane" visibility of a wide area represented by a single point measurement, assuming that the weather environment around the installation site is uniform. Both measurement methods have limitations, and only can acquire visibility in a fixed horizontal direction, so that accurate and timely judgment and feedback cannot be made on weather phenomena affecting navigation safety.
Disclosure of Invention
In order to solve the above problems, an object of the present utility model is to provide a visibility detection laser radar apparatus capable of realizing rapid detection of spatial three-dimensional visibility distribution profile data.
In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:
the visibility detection laser radar device comprises a laser emitting module, a signal receiving module, a photoelectric detection module, a positioning module, a scanning module, an angle measuring module, a data processing and controlling module and a power supply module,
the laser emission module is used for emitting pulse laser beams;
the signal receiving module is used for receiving the atmospheric back scattering optical echo signals and converging the signals on the light detector photosurface of the photoelectric detection module;
the photoelectric detection module is used for carrying out photoelectric conversion, signal filtering and amplification treatment on the received echo optical signals;
the positioning module is used for collecting longitude and latitude information of the position where the laser radar is located and sending the longitude and latitude information to the data processing and control module for processing;
the scanning module is used for performing three-dimensional scanning of the laser radar;
the angle measurement module is used for acquiring the information of the vertical inclination angle and the horizontal geomagnetic angle of the current measurement gesture of the laser radar;
the data processing and control module is used for outputting signals to control the laser emitting module to emit laser and control the scanning module to perform space three-dimensional scanning; meanwhile, receiving the electric signals transmitted by the photoelectric detection module, receiving the longitude and latitude positioning signals transmitted by the positioning module, and receiving geomagnetic angle and inclination angle signals transmitted by the angle measurement module; the signals are processed by a data processing and control module to obtain spatial three-dimensional visibility distribution data;
the power module is used for supplying power to the modules.
Further, the laser emitting module adopts an infrared, visible or ultraviolet band pulse laser as a light source.
Further, the signal receiving module adopts a lens or a reflecting mirror.
Further, the above-mentioned photodetection module employs an avalanche photodiode or photomultiplier as the photodetector.
Further, the positioning module adopts a GPS positioning module or a Beidou satellite positioning module.
Further, the scanning module adopts a galvanometer scanning module.
Further, the angle measuring module adopts a geomagnetic angle sensor and an inclination angle sensor.
Further, the visibility detection laser radar device further comprises a direct-incidence-preventing module, wherein the direct-incidence-preventing module is connected with the data processing and controlling module and used for monitoring the direction of the strong light source in real time, and shielding the light path of the laser transmitting module and the signal receiving module when the direct-incidence danger of strong light occurs.
Further, the anti-glare direct irradiation module comprises a glare perception sub-module and an electric baffle sub-module, wherein the glare perception sub-module consists of a focusing lens, a transmission optical fiber and a photodiode assembly, the focusing lens is used for focusing an optical signal on the front surface of the transmission optical fiber, the transmission optical fiber is used for transmitting the optical signal on the photosensitive surface of the photodiode, the photodiode assembly is used for converting, amplifying and filtering the optical signal to an electric signal, and the electric signal is sent to the data processing and control module for processing; the electric baffle sub-module consists of an electric push rod and a shading baffle connected with the electric push rod, wherein the electric push rod is used for receiving instructions sent by the data processing and control module, pushing the shading baffle to move, and shielding the light path of the laser emitting module and the light path of the signal receiving module when strong light irradiates to prevent strong light focusing.
Furthermore, the laser emission module is a coaxial laser radar, and the field angle of the strong light perception sub-module is larger than the maximum value of the field angle of the signal receiving module and the field angle of the laser emission module.
Furthermore, the laser emission module is a non-coaxial laser radar, and the field angle of the strong light perception sub-module is larger than the sum of the field angle of the signal receiving module and the field angle of the laser emission module.
By adopting the technical scheme, the utility model has the following advantages:
this laser radar device is surveyed to visibility, its simple structure can measure horizontal visibility, also can measure inclined visibility and perpendicular visibility, can acquire the distribution data of visibility in the space dimension, effectively monitors and discerns the visibility change of different directions, can prevent effectively simultaneously that the highlight from penetrating directly from causing the harm to laser radar, is applicable to application fields such as harbour, channel, carrier-borne, airport, has good practical value and profound economic meaning.
Drawings
FIG. 1 is a block diagram showing the constitution of a visibility-detecting lidar device of the present utility model;
fig. 2 is a block diagram of the structural composition of the louver direct module in fig. 1.
Detailed Description
The technical scheme of the utility model is further described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, the visibility detection laser radar apparatus includes a laser emitting module, a signal receiving module, a photoelectric detection module, a positioning module, a scanning module, an angle measuring module, a data processing and controlling module, an anti-glare direct irradiation module, and a power supply module,
the laser emission module adopts an infrared, visible or ultraviolet wave band pulse laser as a light source and is used for emitting pulse laser beams;
the signal receiving module is connected with the photoelectric detection module by adopting a lens or a reflecting mirror and is used for receiving the atmospheric back scattering light echo signals and converging the back scattering light echo signals on a light detector light sensing surface of the photoelectric detection module;
the photoelectric detection module adopts an avalanche photodiode or a photomultiplier as a photodetector and is used for carrying out photoelectric conversion, signal filtering and amplification treatment on the received echo light signals;
the positioning module adopts a GPS positioning module or a Beidou satellite positioning module and is used for acquiring longitude and latitude information of the position where the laser radar is located and sending the longitude and latitude information to the data processing and control module for processing;
the scanning module adopts a galvanometer scanning module, has high scanning speed and high repeated positioning precision, and is used for carrying out three-dimensional scanning of the laser radar;
the angle measurement module adopts a geomagnetic angle sensor and an inclination angle sensor and is used for acquiring information of a vertical inclination angle and a horizontal geomagnetic angle of the current measurement gesture of the laser radar;
the anti-glare direct irradiation module is used for monitoring the azimuth of a strong light source (such as sun, a high-power lighting lamp and the like) in real time, shielding the light path of the laser emission module and the signal receiving module when the danger of strong light direct irradiation occurs, preventing strong light from focusing and protecting the safety of the internal devices of the visibility detection laser radar device;
the data processing and controlling module is connected with the laser transmitting module, the scanning module, the photoelectric detection module, the positioning module, the angle sensing module and the anti-glare direct irradiation module, and outputs signals to control the laser transmitting module to periodically transmit laser and control the scanning module to realize space three-dimensional scanning; meanwhile, receiving the electric signals transmitted by the photoelectric detection module, receiving the longitude and latitude positioning signals transmitted by the positioning module, and receiving geomagnetic angle and inclination angle signals transmitted by the angle sensing module; the signals are processed by a data processing and control module to obtain spatial three-dimensional visibility distribution data;
the power module is used for supplying power to the laser emission module, the signal receiving module, the photoelectric detection module, the data processing and control module, the positioning module, the scanning module, the angle measuring module and the anti-glare direct irradiation module.
The utility model relates to a visibility detection laser radar device, which has the working mode that:
the measurement is as follows: the laser emission module emits a beam of pulse laser; the signal receiving module receives the atmospheric molecular echo optical signal; the photoelectric detection module performs photoelectric conversion, signal filtering and amplification on the echo optical signal; the data processing and control module controls the laser emitting module to emit pulse laser beams, receives the electric signals transmitted by the photoelectric detection module, receives the longitude and latitude positioning signals transmitted by the positioning module, and receives geomagnetic angle and inclination angle signals transmitted by the angle sensing module; obtaining a piece of visibility profile information of the current positioning point and the current posture (geomagnetic angle and inclination angle) of the laser radar through inversion operation; the positioning module sends longitude and latitude positioning information to the data processing and control module; the angle measurement module sends geomagnetic angle and inclination angle information to the data processing and control module; and after the measurement is finished, the data processing and control module controls the scanning module to move to the next measurement position and starts the next measurement.
Through multiple measurements, spatial three-dimensional visibility distribution data can be obtained.
As shown in fig. 2, the above-mentioned direct-preventing light module includes a strong light sensing sub-module, an electric baffle sub-module, where the strong light sensing sub-module is composed of a focusing lens, a transmission optical fiber and a photodiode assembly, the focusing lens is used to focus the optical signal on the front surface of the transmission optical fiber, the transmission optical fiber is used to transmit the optical signal on the photosensitive surface of the photodiode, the photodiode assembly is used to convert, amplify and filter the optical signal into an electrical signal, and send the electrical signal to a data processing and controlling module, and the data processing and controlling module recognizes the electrical signal and compares it with a preset threshold; the electric baffle sub-module consists of an electric push rod and a shading baffle connected with the electric push rod, wherein the electric push rod is used for receiving instructions sent by the data processing and control module, pushing the shading baffle to move, and shielding the light path of the laser emitting module and the light path of the signal receiving module when strong light irradiates to prevent strong light focusing.
The strong light perception sub-module can perceive strong light irradiation before the laser emission module and the signal receiving module; when the strong light source enters the optical view field of the strong light perception sub-module, the electric signal is higher than the set threshold value, at the moment, the data processing and control module sends a forward command to the electric push rod in the electric baffle sub-module, and the electric push rod pushes the shading baffle to shade the light path of the laser emitting module and the light path of the signal receiving module, so that strong light focusing is prevented. When the strong light source leaves the optical view field of the strong light perception sub-module, the electric signal is lower than the set threshold value, at the moment, the data processing and control module sends a backward command to the electric push rod in the electric baffle sub-module, the electric push rod drives the shading baffle to retract, the optical paths of the laser transmitting module and the signal receiving module are opened, and the visibility detection laser radar resumes operation.
The laser emission module is a coaxial laser radar, and the field angle of the strong light perception sub-module is larger than the maximum value of the field angle of the signal receiving module and the field angle of the laser emission module.
The laser emission module is a non-coaxial laser radar, and the field angle of the strong light perception sub-module is larger than the sum of the field angle of the signal receiving module and the field angle of the laser emission module.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A visibility detection laser radar device is characterized in that: which comprises a laser emitting module, a signal receiving module, a photoelectric detection module, a positioning module, a scanning module, an angle measuring module, a data processing and controlling module and a power supply module, wherein,
the laser emission module is used for emitting pulse laser beams;
the signal receiving module is used for receiving the atmospheric back scattering optical echo signals and converging the signals on the light detector photosurface of the photoelectric detection module;
the photoelectric detection module is used for carrying out photoelectric conversion, signal filtering and amplification treatment on the received echo optical signals;
the positioning module is used for collecting longitude and latitude information of the position where the laser radar is located and sending the longitude and latitude information to the data processing and control module for processing;
the scanning module is used for performing three-dimensional scanning of the laser radar;
the angle measurement module is used for acquiring the information of the vertical inclination angle and the horizontal geomagnetic angle of the current measurement gesture of the laser radar;
the data processing and control module is used for outputting signals to control the laser emitting module to emit laser and control the scanning module to perform space three-dimensional scanning; meanwhile, receiving the electric signals transmitted by the photoelectric detection module, receiving the longitude and latitude positioning signals transmitted by the positioning module, and receiving geomagnetic angle and inclination angle signals transmitted by the angle measurement module; the signals are processed by a data processing and control module to obtain spatial three-dimensional visibility distribution data;
the power supply module is used for supplying power to the modules.
2. The visibility detection laser radar apparatus according to claim 1, characterized in that: the laser emitting module adopts an infrared, visible or ultraviolet wave band pulse laser as a light source.
3. The visibility detection laser radar apparatus according to claim 1, characterized in that: the signal receiving module adopts a lens or a reflecting mirror; the photo detection module employs an avalanche photodiode or photomultiplier as the photodetector.
4. The visibility detection laser radar apparatus according to claim 1, characterized in that: the positioning module adopts a GPS positioning module or a Beidou satellite positioning module.
5. The visibility detection laser radar apparatus according to claim 1, characterized in that: the scanning module adopts a galvanometer scanning module.
6. The visibility detection laser radar apparatus according to claim 1, characterized in that: the angle measuring module adopts a geomagnetic angle sensor and an inclination angle sensor.
7. The visibility detection laser radar apparatus according to claim 1, characterized in that: the system also comprises an anti-glare direct projection module which is connected with the data processing and control module and used for monitoring the azimuth of the strong light source in real time and shielding the light path of the laser transmitting module and the signal receiving module when the danger of strong light direct projection occurs.
8. The visibility detection laser radar apparatus according to claim 7, characterized in that: the anti-glare direct irradiation module comprises a glare perception sub-module and an electric baffle sub-module, wherein the glare perception sub-module consists of a focusing lens, a transmission optical fiber and a photodiode component, the focusing lens is used for focusing an optical signal on the front surface of the transmission optical fiber, the transmission optical fiber is used for transmitting the optical signal on the photosensitive surface of the photodiode, the photodiode component is used for converting, amplifying and filtering the optical signal into an electric signal, and the electric signal is sent to the data processing and control module for processing; the electric baffle sub-module consists of an electric push rod and a shading baffle connected with the electric push rod, wherein the electric push rod is used for receiving instructions sent by the data processing and control module, pushing the shading baffle to move, and shielding the light path of the laser emitting module and the light path of the signal receiving module when strong light irradiates to prevent strong light focusing.
9. The visibility detection laser radar apparatus according to claim 8, characterized in that: the laser emission module is a coaxial laser radar, and the field angle of the strong light perception sub-module is larger than the maximum value of the field angle of the signal receiving module and the field angle of the laser emission module.
10. The visibility detection laser radar apparatus according to claim 8, characterized in that: the laser emission module is a non-coaxial laser radar, and the field angle of the strong light perception sub-module is larger than the sum of the field angle of the signal receiving module and the field angle of the laser emission module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320067179.7U CN219328900U (en) | 2023-01-10 | 2023-01-10 | Visibility detection laser radar device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320067179.7U CN219328900U (en) | 2023-01-10 | 2023-01-10 | Visibility detection laser radar device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219328900U true CN219328900U (en) | 2023-07-11 |
Family
ID=87061878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320067179.7U Active CN219328900U (en) | 2023-01-10 | 2023-01-10 | Visibility detection laser radar device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219328900U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116660866A (en) * | 2023-07-31 | 2023-08-29 | 今创集团股份有限公司 | Laser radar visual detection box and manufacturing method and application thereof |
-
2023
- 2023-01-10 CN CN202320067179.7U patent/CN219328900U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116660866A (en) * | 2023-07-31 | 2023-08-29 | 今创集团股份有限公司 | Laser radar visual detection box and manufacturing method and application thereof |
| CN116660866B (en) * | 2023-07-31 | 2023-12-05 | 今创集团股份有限公司 | Laser radar visual detection box and manufacturing method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107885223B (en) | Unmanned aerial vehicle retrieves bootstrap system based on laser | |
| US7683928B2 (en) | Lidar with streak-tube imaging, including hazard detection in marine applications; related optics | |
| CA2782180C (en) | Active 3d monitoring system for traffic detection | |
| CA2615950C (en) | Method and lidar system for measuring air turbulences on board aircraft and for airports and wind farms | |
| US8781790B2 (en) | Return pulse shape analysis for falling edge object discrimination of aerosol LIDAR | |
| EP2866047B1 (en) | A detection system for detecting an object on a water surface | |
| JP2018119986A (en) | Optical distance meter without multiple-view scanner under bright circumference background light | |
| CN102621102B (en) | Method for measuring horizontal visibility based on CCD (Charge Coupled Device) laser radar | |
| US20100195089A1 (en) | Wind velocity measurement system and method | |
| CN101581786A (en) | Semiconductor laser radar visibility meter | |
| CN219328900U (en) | Visibility detection laser radar device | |
| CN101776760A (en) | Laser three-dimensional imaging device based on single-photon detector | |
| CA2053758C (en) | Multiple scattering technique (must) lidar | |
| KR20230003089A (en) | LiDAR system with fog detection and adaptive response | |
| CN108919233A (en) | A kind of Atmospheric particulates chromatograph | |
| CN102501978B (en) | Method and system for realizing all-weather aircraft landing or carrier landing by quantum entangled-state light | |
| CN111458714A (en) | Medium-and-far-infrared thermal imaging laser illumination system and method | |
| CN109709533B (en) | Geiger mode three-dimensional laser imaging focal plane array detector imaging performance test system | |
| CN107436430A (en) | High security photoelectric remote-sensing device scan detection device | |
| Ashidate et al. | Development of a helicopter-mounted eye-safe laser radar system for distance measurement between power transmission lines and nearby trees | |
| CN2919236Y (en) | Lidar for detecting atmosphere and finely particles in atmosphere | |
| CN209992667U (en) | Laser radar device and detection system based on split lens | |
| Cester | Atmospheric aerosol monitoring at the Pierre Auger Observatory | |
| Guo et al. | A 1064 nm single-photon lidar for three-dimensional imaging | |
| CN201673256U (en) | Laser intelligently-actively-avoiding flyer device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |